Mysys temporal utilities

Collaboration diagram for Mysys temporal utilities:

Files
file	my_temporal.h
	Server classes for temporal handling (DATE, TIME, DATETIME)
file	my_temporal.cc
	Implementation of low level date, time and datetime utilities.

Functions
bool	Time_val::is_adjusted (uint32_t decimals) const
uint32_t	Time_val::actual_decimals () const
void	Time_val::adjust_fraction (uint32_t decimals, bool round)
bool	Time_val::add (Time_val tv, bool subtract)
	Add a time value to another time value, or subtract it. More...
bool	Time_val::add (Interval &iv, bool subtract)
	Add an interval to a time value, or subtract it. More...
static Time_val	Time_val::strip_date (const MYSQL_TIME &mt)
	Creates a Time_val from a date_time by extracting only the time fields. More...
	Time_val::operator MYSQL_TIME () const
	Convert time value to the generalized temporal time format. More...
void	Time_val::store_time (uint8_t *ptr, uint32_t dec) const
	Convert server time value to storage engine interface format. More...
static void	Time_val::load_time (const uint8_t *ptr, uint32_t dec, Time_val *time)
	Convert from storage engine interface time format to server time value. More...
int64_t	Time_val::to_int_rounded () const
	base100 representation without microsecond, but rounded '-12:34:56.999999' is returned as -123457 More...
int64_t	Time_val::to_int_truncated () const
	base100 representation without microsecond, '-12:34:56.999999' is returned as -123456 More...
double	Time_val::to_double () const
	base100 representation with microseconds, returned as double precision float More...
size_t	Time_val::to_string (char *buffer, uint32_t dec) const
std::string	Time_val::to_string () const

Variables
static const uint32_t	divisors [] = {1000000, 100000, 10000, 1000, 100, 10}

Detailed Description

Function Documentation

actual_decimals()

uint32_t Time_val::actual_decimals

(

)

const

Returns

actual number of decimals in fraction

add() [1/2]

bool Time_val::add	(	Interval &	iv,
		bool	subtract
	)

Add an interval to a time value, or subtract it.

Parameters

iv	Interval to add or subtract
subtract	If true, subtract the time value, otherwise add it.

Returns

false if result is within valid time range, true otherwise.

add() [2/2]

bool Time_val::add	(	Time_val	tv,
		bool	subtract
	)

Add a time value to another time value, or subtract it.

Parameters

tv	Time value to add or subtract
subtract	If true, subtract the time value, otherwise add it.

Returns

false if result is within valid time range, true otherwise.

adjust_fraction()

void Time_val::adjust_fraction	(	uint32_t	decimals,
		bool	round
	)

is_adjusted()

bool Time_val::is_adjusted

(

uint32_t

decimals

)

const

Returns

true if value is adjusted to number of decimals in fraction

load_time()

void Time_val::load_time ( const uint8_t *  ptr, uint32_t  dec, Time_val *  time  )

static

Convert from storage engine interface time format to server time value.

Parameters

	ptr	The pointer to read the value at.
	dec	Precision.
[out]	time	Returned time value

operator MYSQL_TIME()

Time_val::operator MYSQL_TIME ( ) const

explicit

Convert time value to the generalized temporal time format.

store_time()

void Time_val::store_time	(	uint8_t *	ptr,
		uint32_t	dec
	)		const

Convert server time value to storage engine interface format.

Parameters

[out]	ptr	The buffer to put value at.
	dec	Precision.

strip_date()

Time_val Time_val::strip_date ( const MYSQL_TIME &  mt )

static

Creates a Time_val from a date_time by extracting only the time fields.

to_double()

double Time_val::to_double

(

)

const

base100 representation with microseconds, returned as double precision float

to_int_rounded()

int64_t Time_val::to_int_rounded

(

)

const

base100 representation without microsecond, but rounded '-12:34:56.999999' is returned as -123457

to_int_truncated()

int64_t Time_val::to_int_truncated

(

)

const

base100 representation without microsecond, '-12:34:56.999999' is returned as -123456

to_string() [1/2]

std::string Time_val::to_string

(

)

const

to_string() [2/2]

size_t Time_val::to_string	(	char *	buffer,
		uint32_t	dec
	)		const

Variable Documentation

divisors

const uint32_t divisors[] = {1000000, 100000, 10000, 1000, 100, 10}

static